Personalized Jack O Lantern Trick or Treat Halloween T-Shirt. A Trick or Treat bag in the shape of a Jack O Lantern, filled with spooky, creepy Halloween themed candy and cakes. Cute Halloween gift! Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.